Spindle



June 5, 1923. 1,457,572

J. H. HARNETT SPINDLE Filed Nov. 14 1922 WIT/V588 l/VVEIVTOIZ W M James HMaTfl V v A TTOR/VEY,

Patented June 5, 1923.

UNHTE STATES JhMns H. nnannr'r, or NUTLEY, new JERSEY.

SPINDLE.

Application filed November 14, 1922. Serial No. 600,850.

To all whom it may concern:

Be it known that I, JAMns H. HARNETT, a citizen of the United States, residing at Nutley, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Spindles, of which the following is a specification.

The object of this invention is to provide a spindle which will be adapted to grip the bore of the member,,as a cop tube, ar-

ranged thereon and which will also be adapted to receive cop tube or the like members varying widely in diameter and yet hold them securely in a position of perfeet alinement with respect to the axis of the spindle. Spindles having springs to grip the bores of cop tubes and the like, such springs usually being in the form of arched or bowed longitudinal wires, are

known, but such spindles have heretofore been designed and adapted to receive cop tubes whose bores varied at most only a very little in diameter: if a cop tube hav-" ing a bore of appreciably greater diameter than that of the spindle proper were used on the spindle then the tube would not be held securely in axial alinement with the spindle, because the spring alone would not serve-to hold it in such alinement. Ac-

cording to this invention, given a spindle means and is adapted to receive the contact of the butts or cop tubes varying very appreciably in diameter.

In the drawing,

Fig. 1 is a side elevation of the spindle 4 embodying my invention, parts thereof appearing in section;

Fig. 2 is a sectional view on the line 22, Fig. 1, on a larger scale; and

Fig. 3 is a side elevation of the spindle and the cop tube thereon, the latter being shown partly in section.

a designates the spindle proper. Near its free end the spindle has holes formed therein at right angles to its axis and to each other and through which are passed spring wires 6 which are bent downwardly and then have their free ends lying in grooves 0 formed-in the spindle proper, the

wires being bowed outwardly between their free ends and the points where they pass through the mentioned holes in the spindle. This construction is well known in the art.

Formed or in some suitable way secured rigidly on the spindle proper is an enlargement (Z which is tapered towards the free end of'the spindle, that is toward the spring means 6. In the present case the enlargement is a separate collar fitted over the spindle proper and embracing the portions of the slots 0 in which the ends of the springs b are arranged, so the collar is slitted at d accommodate the springs. By this arrangement the springs are securely held at their ends which engage the collar, they are kept truly radial and the whole structure is cheaply made and may be readily assembled.

In view of the foregoing it will be seen that cop tubes 6 varying'widely in diameter may be used. with the improved spindle. That is, cop tubes varying in diameter to the extent represented by the difference between the diameters at the smaller and larger ends of the enlargement d may be fitted to the spindle and in each case if the butt of the tube is made to contact squarely against the conical surface of the enlargement the latter and the springs will coact to hold the tube, whatever its diam eter, in perfect axial alinement with the spindle. This would not be possible with the ordinary spindle provided with springs as 6 because, while such a spindle might have been constructed to at least receive cop tubes varying in diameter, it would obviously not hold the larger tubes in true axial alinement with the spindle because the spindle proper would in such case be relatively too small to resist appreciably skewing of the cop tube thereon.

In short, when the tube is slipped on the spindle embodying myinvention, whatever its diameter it undergoes centering in two approximately separated zones thereof one at its base, where it is jammed against the cone, and the other where it is subject to the radial pressure of the springs.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent is A spindle including a spindle proper, a

collar arranged thereon and adapted to collar and having free ends arranged with form a stop for av cop tube slipped onto the in the collar and confined against radial spindle and having equidistant radial and movement and being engaged in the slots. 10

longitudinal slots formed in the end thereof In testimony whereof I aflix my signa- 5 adjoining the free end of the spindle, and ture.

outwardly bent spring devices each secured to the spindle at a point removed from the JAMES H. HARNETT. 

